separating metal and mineral concentrates from ore and alluvial deposits by thickening, flotation, gravity separation, filtration, and or magnetic and electrostatic separation

observing meters, gauges and control panels, and adjusting valves and controls to ensure the safe and efficient operation of equipment, and detecting malfunctions, and assisting with plant and machinery maintenance and repair

examining processed materials visually or with hands to ensure compliance with established standards and job specifications, and collect samples for testing in laboratories

recording information about processing completed during shifts, such as quantities, types and dimensions of materials produced

sorting, stacking and moving processed minerals and stone for packaging, further processing or shipping